Technology In active development
A five-antenna array, adaptive spatial processing and receiver software we build end to end — running on board, feeding your autopilot.
The challenge
GNSS signals reach the antenna far below the noise floor. A conventional receiver with a single antenna hears everything, from every direction, at once — so when interference arrives, it drowns out the satellites and the receiver loses lock.
Rastella listens through five antennas instead of one. Because a signal reaches each antenna at a slightly different moment, the receiver can tell where signals come from — and treat interference differently from satellites.
Signal chain
GPS L1 C/A · Galileo E1 · BeiDou B1C
Five-element CRPA
All antennas sampled together
Adaptive interference suppression
Our own receiver software
Multi-constellation position + error estimate
Autopilot or control computer
01 · Antenna array
Rastella uses a controlled reception pattern antenna (CRPA): five elements arranged on a single plate. A signal from any direction reaches each element with a slightly different phase. Those differences are what let the receiver separate signals by direction.
02 · Spatial suppression
Adaptive algorithms combine the five channels so the array becomes insensitive in the direction of the interference — a “null” — while preserving satellite signals. When the interference moves or a new source appears, the pattern adapts.
03 · Interference awareness
Rastella is designed not only to suppress interference but to describe it: the receiver classifies the type of interference and estimates the direction it comes from. Operators can follow it live on the monitoring dashboard.
04 · Receiver & integration
Acquisition, tracking and the multi-constellation navigation filter are software we write ourselves. Everything runs on board on an embedded computer, and position with its error estimate reaches the autopilot or control system as a standard GPS input.
Technical overview
Rastella is in active development; specifications may change. Technical details are shared with pilot partners under NDA.
Request the datasheetRastella is multi-constellation GNSS receiver software that works with five antennas instead of one. When interference appears, it adapts the reception pattern to ignore the interference while it keeps tracking satellites, so the platform keeps a continuous position.
Rastella is in active development, with our focus on the receiver software. It runs on our development setup, and we are looking for pilot partners to evaluate it on their own platforms.
No. Rastella is a passive receiver: it only listens to satellite signals and never transmits. It cannot interfere with other systems.
GPS L1 C/A, Galileo E1 and BeiDou B1C, all in the L1 band. Tracking three constellations together gives more satellites to work with than any single system.
Rastella is built for interference that arrives from a direction different from the satellites — for example from a device in a nearby vehicle or faulty equipment on the ground. A five-element array can steer nulls toward a limited number of simultaneous sources; in theory, up to four.
Rastella is designed against interference that blocks GNSS signals. Detecting counterfeit (spoofed) signals is not part of the current prototype.
Yes. Without interference, Rastella works as a normal multi-constellation receiver. Protection is designed to engage automatically when interference appears and to release when it ends.
Accuracy depends on satellite visibility and the environment. Rastella is a standalone receiver and does not use RTK corrections. As a product in development, its accuracy specifications are shared with pilot partners under NDA.
Yes. Rastella computes position itself and delivers it, together with an error estimate, to the autopilot as a standard GPS input.
Rastella delivers position as a standard GPS input, so it is designed to fit the autopilot or control computer you already use. Our first integration is with PX4; integrations with other autopilots, ROS-based robots and custom systems are discussed project by project.
No. All processing runs on board. Rastella keeps working with no connectivity at all.
Yes. A live monitoring dashboard shows satellite tracking, protection status, the type of interference and its estimated direction.
They depend on the platform and configuration. The current prototype is built from commercially available components; size, weight and power details are discussed with each pilot partner.
The receiver is software-defined. Improvements to acquisition, tracking and suppression reach systems in use as software updates, without changing hardware.
Drone and robot manufacturers, system integrators and operators of autonomous systems with a concrete use case. We keep the group small so we can work closely with each partner.
Four steps: your application, a technical briefing under NDA, an evaluation on your platform run by your team with our remote support, and an integration plan.
Yes. Technical documentation and development details are shared with pilot partners under NDA.
Not yet. Rastella is in active development and is not commercially available. Right now we are open to pilot partners for evaluation.
Pilot program — now open
Join the pilot program to receive technical documentation under NDA and help shape the product.